ARCH		?= atmega168
AVRDUDE_ARCH	?= m168
AVRDUDE		?= avrdude
PROGRAMMER	?= avrisp2
PROGPORT	?= usb

CC		= avr-gcc
OBJCOPY		= avr-objcopy
SIZE		= avr-size
PYTHON		= python

CFLAGS		= -mmcu=$(ARCH) -std=c99 -g0 -Os -fomit-frame-pointer -Wall -fpack-struct
CFLAGS		+= "-Dinline=inline __attribute__((__always_inline__))"
#CFLAGS		+= -mcall-prologues


OBJECTS = main.o lcd.o zd1211.o util.o errno.o
BIN	= fw.bin
HEX	= fw.hex

all: $(HEX)

battery_tab.h: battery_tab_gen.py
	$(PYTHON) battery_tab_gen.py > battery_tab.h

main.o: main.h util.h lcd.h zd1211.h calibration.h atomic.h errno.h battery_tab.h

lcd.o: lcd.h util.h font.h

zd1211.o: zd1211.h util.h main.h errno.h

util.o: util.h calibration.h main.h lcd.h

errno.o: errno.h util.h

%.s: %.c
	$(CC) $(CFLAGS) -S $*.c

$(BIN): $(OBJECTS)
	$(CC) $(CFLAGS) -o $(BIN) $(OBJECTS) $(LDFLAGS)

$(HEX): $(BIN)
	$(OBJCOPY) -O ihex $(BIN) $(HEX)
	$(SIZE) $(BIN)

avrdude:
	$(AVRDUDE) -B 1 -p $(AVRDUDE_ARCH) -c $(PROGRAMMER) -P $(PROGPORT) -t

install_flash:
	$(AVRDUDE) -B 1 -p $(AVRDUDE_ARCH) -c $(PROGRAMMER) -P $(PROGPORT) -U flash:w:$(HEX)

install: all install_flash

clean:
	-rm -f *~ *.o battery_tab.h $(BIN)

distclean: clean
	-rm -f *.s $(HEX)